
1 1/8U~
Medium carbon steels
For icon explanation, refer to P.50
Segment:1C
| Size | Class | Code | Chamfer | L (inch) | ℓ (inch) | ℓn (inch) | ℓs (inch) | Ds (inch) | K (inch) | ℓk (inch) | No. of flutes | Type |
| For Unified Threads | ||||||||||||
| No.2-56UNC | GH1 GH2 | SSUN2E1NEB SSUN2E2NEB | 2.5P | 1.772 | 0.314 | - | 1.161 | 0.141 | 0.11 | 0.187 | 2 | 1 |
| No.2-64UNF | GH1 GH2 | SSUN2D1NEB SSUN2D2NEB | 2.5P | 1.772 | 0.314 | - | 1.161 | 0.141 | 0.11 | 0.187 | 2 | 1 |
| No.3-48UNC | GH1 GH2 | SSUN3F1NEB SSUN3F2NEB | 2.5P | 2.205 | 0.354 | 0.669 | 1.28 | 0.141 | 0.11 | 0.187 | 2 | 2 |
| No.3-56UNF | GH1 GH2 | SSUN3E1NEB SSUN3E2NEB | 2.5P | 2.205 | 0.354 | 0.669 | 1.28 | 0.141 | 0.11 | 0.187 | 2 | 2 |
| No.4-40UNC | GH1 GH2 | SSUN4H1NEB SSUN4H2NEB | 2.5P | 2.205 | 0.354 | 0.709 | 1.28 | 0.141 | 0.11 | 0.187 | 2 | 2 |
| No.4-48UNF | GH1 GH2 | SSUN4F1NEB SSUN4F2NEB | 2.5P | 2.205 | 0.354 | 0.709 | 1.28 | 0.141 | 0.11 | 0.187 | 2 | 2 |
| No.5-40UNC | GH1 GH2 | SSUN5H1NEB SSUN5H2NEB | 2.5P | 2.205 | 0.433 | 0.768 | 1.358 | 0.141 | 0.11 | 0.187 | 2 | 2 |
| No.5-44UNF | GH1 GH2 | SSUN5G1NEB SSUN5G2NEB | 2.5P | 2.205 | 0.433 | 0.768 | 1.358 | 0.141 | 0.11 | 0.187 | 2 | 2 |
| GH1 | SSUN6J1NEB | |||||||||||
| No.6-32UNC | GH2 GH3 | SSUN6J2NEB SSUN6J3NEB | 2.5P | 2.205 | 0.433 | 0.768 | 1.358 | 0.141 | 0.11 | 0.187 | 3 | 2 |